splitting a text box sometimes requires wrapping it in a list

1 files changed, 20 insertions, 2 deletions

diff --git a/eqn.c b/eqn.c
index 563c35ff..0b961b74 100644
--- a/eqn.c
+++ b/eqn.c
@@ -1,4 +1,4 @@
-/*	$Id: eqn.c,v 1.68 2017/06/23 00:30:38 schwarze Exp $
+/*	$Id: eqn.c,v 1.69 2017/06/23 21:04:57 schwarze Exp $
 /*
  * Copyright (c) 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -1139,7 +1139,25 @@ this_tok:
 					break;
 				if (ccln == ccl)
 					continue;
-				/* Boundary found, add a new box. */
+				/* Boundary found, split the text. */
+				if (parent->args == parent->expectargs) {
+					/* Remove the text from the tree. */
+					if (cur->prev == NULL)
+						parent->first = cur->next;
+					else
+						cur->prev->next = NULL;
+					parent->last = cur->prev;
+					parent->args--;
+					/* Set up a list instead. */
+					nbox = eqn_box_alloc(ep, parent);
+					nbox->type = EQN_LIST;
+					/* Insert the word into the list. */
+					nbox->first = nbox->last = cur;
+					cur->parent = nbox;
+					cur->prev = NULL;
+					parent = nbox;
+				}
+				/* Append a new text box. */
 				nbox = eqn_box_alloc(ep, parent);
 				nbox->type = EQN_TEXT;
 				nbox->text = mandoc_strdup(cpn);